During the mating season, beaver travel to centralized meadows

The industrious beaver is a good example of a central-place forager. Given this,
which of the following statements is most likely to be true?
During the mating season, beaver travel to centralized meadows where they compete for
mates.

A colonial species, numerous beaver families will each build a lodge on the edge of a

central pond.
location.

All beaver in an area forage for aquatic plants that grow in a single, centralized

Beaver venture out from their lodges to collect plant matter, returning to store this

food in or near the lodge.

Q1.23. The giving-up density (GUD) of gray squirrels feeding on college
campuses tends to be lower than that of squirrels feeding in suburban back
yards. Which of the following hypotheses isconsistent with this result?
Squirrels perceive predation risk to be higher in suburban back yards.
Squirrels perceive
predation risk to be higher on college campuses.
campuses, and thus feed less intensively.

Squirrels are better fed on college

Squirrels benefit more by foraging in suburban

back yards than on college campuses.
Q1.24. The social bacteria M. xanthus coordinate group attacks on other
bacteria, rapidly consuming entire colonies of prey. Researchers may be
interested in many different aspects of this behavior. Which of the following
HYPOTHESES suggests the potential adaptive value of such a coordinated
attack?
M. xanthus use chemical signals that are exchanged between neighbors to coordinate their
attacks.
xanthus.

Coordinated attacks are unique among bacteria, having evolved in only M.
M. xanthus that engage in coordinated attacks feed more efficiently and

reproduce faster than those that don't.

M. xanthus only engage in coordinated attacks if

they have reached a certain, more mature, developmental stage.